whats-new/2026-w17.md +113 −0 added
1> ## Documentation Index
2> Fetch the complete documentation index at: https://code.claude.com/docs/llms.txt
3> Use this file to discover all available pages before exploring further.
4
5# Week 17 · April 20–24, 2026
6
7> /ultrareview opens as a research preview, automatic session recaps when you return to a terminal, custom color themes you can build and ship in plugins, and a redesigned Claude Code on the web.
8
9<div className="digest-meta">
10 <span>Releases <a href="/docs/en/changelog#2-1-114">v2.1.114 → v2.1.119</a></span>
11 <span>4 features · April 20–24</span>
12</div>
13
14<div className="digest-feature">
15 <div className="digest-feature-header">
16 <span className="digest-feature-title">/ultrareview</span>
17 <span className="digest-feature-pill">research preview</span>
18 </div>
19
20 <p className="digest-feature-lede">Now in public research preview. Ultrareview runs a fleet of bug-hunting agents in the cloud against your branch or a PR, and findings land back in the CLI or Desktop automatically. Run it before merging critical changes such as auth or data migrations.</p>
21
22 <Frame>
23 <video autoPlay muted loop playsInline className="w-full" src="https://mintcdn.com/claude-code/FTi4SBJ9YRs7d-5X/images/whats-new/ultrareview.mp4?fit=max&auto=format&n=FTi4SBJ9YRs7d-5X&q=85&s=0fb1271365d38f414ad155aeb8edb08e" data-path="images/whats-new/ultrareview.mp4" />
24 </Frame>
25
26 <p className="digest-feature-try">Review the branch you're on:</p>
27
28 ```text Claude Code theme={null}
29 > /ultrareview
30 ```
31
32 <p className="digest-feature-try">Or point it at a PR:</p>
33
34 ```text Claude Code theme={null}
35 > /ultrareview 1234
36 ```
37
38 <a className="digest-feature-link" href="/docs/en/ultrareview">Ultrareview guide</a>
39</div>
40
41<div className="digest-feature">
42 <div className="digest-feature-header">
43 <span className="digest-feature-title">Session recap</span>
44 <span className="digest-feature-pill">CLI</span>
45 </div>
46
47 <p className="digest-feature-lede">Switch focus away from a session and come back to a one-line recap of what happened while you were gone. Helpful for staying in flow while running several Claude sessions at once.</p>
48
49 <Frame>
50 <video autoPlay muted loop playsInline className="w-full" src="https://mintcdn.com/claude-code/FTi4SBJ9YRs7d-5X/images/whats-new/session-recap.mp4?fit=max&auto=format&n=FTi4SBJ9YRs7d-5X&q=85&s=0a8db1470bd0161a47efeb2f322af76f" data-path="images/whats-new/session-recap.mp4" />
51 </Frame>
52
53 <p className="digest-feature-try">Generate a recap on demand, or turn the automatic one off from <code>/config</code>:</p>
54
55 ```text Claude Code theme={null}
56 > /recap
57 ```
58
59 <a className="digest-feature-link" href="/docs/en/interactive-mode#session-recap">Interactive mode: session recap</a>
60</div>
61
62<div className="digest-feature">
63 <div className="digest-feature-header">
64 <span className="digest-feature-title">Custom themes</span>
65 <span className="digest-feature-pill">v2.1.118</span>
66 </div>
67
68 <p className="digest-feature-lede">Build and switch between named color themes from <code>/theme</code>, or hand-edit JSON files in <code>\~/.claude/themes/</code>. Each theme picks a base preset and overrides only the tokens you care about. Plugins can ship themes too.</p>
69
70 <p className="digest-feature-try">Open the theme picker and create a new one:</p>
71
72 ```text Claude Code theme={null}
73 > /theme
74 ```
75
76 <a className="digest-feature-link" href="/docs/en/terminal-config#create-a-custom-theme">Terminal config: create a custom theme</a>
77</div>
78
79<div className="digest-feature">
80 <div className="digest-feature-header">
81 <span className="digest-feature-title">Claude Code on the web</span>
82 <span className="digest-feature-pill">web</span>
83 </div>
84
85 <p className="digest-feature-lede">A new look for <a href="https://claude.ai/code">claude.ai/code</a> that matches the redesigned desktop app: sessions sidebar, drag-and-drop layout, and a refreshed routines view. Key parts were rebuilt for quicker responses and a more reliable experience.</p>
86
87 <Frame>
88 <img className="w-full" src="https://mintcdn.com/claude-code/FTi4SBJ9YRs7d-5X/images/whats-new/web-redesign.jpeg?fit=max&auto=format&n=FTi4SBJ9YRs7d-5X&q=85&s=a2aca1b49e295b7337f5779038db8e2c" alt="Claude Code on the web redesign overview: new UI, speed and reliability, work across web, mobile, and CLI" width="1602" height="1610" data-path="images/whats-new/web-redesign.jpeg" />
89 </Frame>
90
91 <a className="digest-feature-link" href="/docs/en/claude-code-on-the-web">Claude Code on the web</a>
92</div>
93
94<div className="digest-wins">
95 <p className="digest-wins-title">Other wins</p>
96
97 <div className="digest-wins-grid">
98 <div><a href="/docs/en/interactive-mode#vim-editor-mode">Vim visual mode</a>: press <code>v</code> for character selection or <code>V</code> for line selection in the prompt input, with operators and visual feedback</div>
99 <div>Hooks can now call MCP tools directly via <a href="/docs/en/hooks#mcp-tool-hook-fields"><code>type: "mcp\_tool"</code></a>, so a hook can hit an already-connected server without spawning a process</div>
100 <div><code>/cost</code> and <code>/stats</code> are merged into <a href="/docs/en/commands"><code>/usage</code></a>; the old names still work as typing shortcuts that open the relevant tab</div>
101 <div><code>/config</code> changes (theme, editor mode, verbose, and similar) now persist to <code>\~/.claude/settings.json</code> and follow the same project/local/policy precedence as other <a href="/docs/en/settings">settings</a></div>
102 <div><a href="/docs/en/sub-agents#fork-the-current-conversation">Forked subagents</a> can be enabled on external builds with <code>CLAUDE\_CODE\_FORK\_SUBAGENT=1</code>: a fork inherits your full conversation context instead of starting fresh</div>
103 <div>Default <a href="/docs/en/model-config#adjust-effort-level">effort level</a> for Pro and Max subscribers on Opus 4.6 and Sonnet 4.6 is now <code>high</code> (was <code>medium</code>)</div>
104 <div>Native macOS and Linux builds replace the <code>Glob</code> and <code>Grep</code> tools with embedded <code>bfs</code> and <code>ugrep</code> available through Bash, for faster searches without a separate tool round-trip</div>
105 <div><code>--from-pr</code> now accepts GitLab merge request, Bitbucket pull request, and GitHub Enterprise PR URLs in addition to github.com</div>
106 <div>Auto mode: include <code>"\$defaults"</code> in <a href="/docs/en/auto-mode-config"><code>autoMode.allow</code>, <code>soft\_deny</code>, or <code>environment</code></a> to add custom rules alongside the built-in list instead of replacing it</div>
107 <div>New <a href="/docs/en/plugin-dependencies#tag-plugin-releases-for-version-resolution"><code>claude plugin tag</code></a> command creates release git tags for plugins with version validation</div>
108 <div>Opus 4.7 sessions now compute against the model's native 1M context window, fixing inflated <code>/context</code> percentages and premature autocompaction</div>
109 <div><code>/resume</code> on large sessions is up to 67% faster and now offers to summarize stale, large sessions before re-reading them</div>
110 </div>
111</div>
112
113[Full changelog for v2.1.114–v2.1.119 →](/en/changelog#2-1-114)