Sourced from rbs's releases.

3.9.2

Release note

Library changes

• Change {} to { 0 } (#2354)

3.9.1

Release note

Miscellaneous

• did_you_mean is a default gem (#2348)
• Skip loading ruby_memcheck (#2347)

3.9.0

Release note

Miscellaneous

• Update steep (#2328)

3.9.0.pre.2

Release note

Signature updates

• Hash.new type (#2323)
• Module#define_method (#2325)
• Object#define_singleton_method (#2324)

Language updates

• Fix define_method method block self type (#2325)

3.9.0.pre.1

Release note

Signature updates

• CGI.escape/unescape_uri_component (#2299)
• Enumerator::Chain (#2220)
• IO.read (#2216)
• IPAddr#netmask (#2311)
• Kernel#gets, Kernel#readline, Kernel#readlines (#2212)
• Net::HTTP.start (#2225)
• OpenSSL::BN (#2267)
• OpenSSL::PKey::{RSA,DSA,DH}#params (#2255)
• UNIXSocket#send_io, UNIXSocket#recv_io (#2264)
• URI.encode/decode_uri_component (#2299)

... (truncated)

Sourced from rbs's changelog.

CHANGELOG

3.9.0 (2025-03-18)

Miscellaneous

• Update steep (#2328)

3.9.0.pre.2 (2025-03-14)

Signature updates

• Hash.new type (#2323)
• Module#define_method (#2325)
• Object#define_singleton_method (#2324)

Language updates

• Fix define_method method block self type (#2325)

3.9.0.pre.1 (2025-03-11)

Signature updates

• CGI.escape/unescape_uri_component (#2299)
• Enumerator::Chain (#2220)
• IO.read (#2216)
• IPAddr#netmask (#2311)
• Kernel#gets, Kernel#readline, Kernel#readlines (#2212)
• Net::HTTP.start (#2225)
• OpenSSL::BN (#2267)
• OpenSSL::PKey::{RSA,DSA,DH}#params (#2255)
• UNIXSocket#send_io, UNIXSocket#recv_io (#2264)
• URI.encode/decode_uri_component (#2299)
• Rename to reduce top-level interface and type alias (#2250)

Language updates

• Let class/module alias decls, global decls, and constant decls be annotated (#2302)
• Add resolve-type-names: false magic comment (#2234)

Library changes

• Remove unused root variable (#2307)
• Run Valgrind on CI and fix memory leaks (#2309)
• Add information for VariableDuplicationError (#2310)
• Reduce Array object allocation during parsing (#2304)
• No class variable duplication validation (#2305)
• Keep annotations during type name resolution (#2303)
• Fix method annotations (#2301)

... (truncated)

• 525126f Merge pull request #2371 from ruby/3.9.2
• d373277 Version 3.9.2
• 100ecce Merge pull request #2354 from ruby/C2059
• 8bf0aa7 Change {} to { 0 }
• f8fabaa Merge pull request #2350 from ruby/version-3.9.1
• 0f89f84 Version 3.9.1
• cfd2301 Merge pull request #2348 from ruby/fix-widows
• 41bcd8c Merge pull request #2347 from ruby/skip-memcheck
• 6e9facd Add --force so that did_you_mean is a default gem
• 78d037a Skip loading ruby_memcheck
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