This page summarizes the changes between tagged releases of Go. For full details, see the Mercurial change log.
++There are two small language changes: the meaning of chan <- chan int +is now defined, and functions returning functions do not need to +parenthesize the result type. + +There is one significant implementation change: the compilers can +handle multiple packages using the same name in a single binary. +In the gc compilers, this comes at the cost of ensuring that you +always import a particular package using a consistent import path. +In the gccgo compiler, the cost is that you must use the -fgo-prefix +flag to pass a unique prefix (like the eventual import path). + +5a/6a/8a: avoid use of fixed-size buffers (thanks Dean Prichard) +5g, 6g, 8g: many minor bug fixes +bufio: give Writer.WriteString same signature as bytes.Buffer.WriteString. +container/list: PushFrontList, PushBackList (thanks Jan Hosang) +godoc: trim spaces from search query (thanks Christopher Wedgwood) +hash: document that Sum does not change state, fix crypto hashes +http: bug fixes, revision of Request/Response (thanks Petar Maymounkov) +math: more handling of IEEE 754 special cases (thanks Charles Dorian) +misc/dashboard: new build dashboard +net: allow UDP broadcast, + use /etc/hosts to resolve names (thanks Yves Junqueira, Michael Hoisie) +netchan: beginnings of new package for connecting channels across a network +os: allow FQDN in Hostname test (thanks Icarus Sparry) +reflect: garbage collection bug in Call +runtime: demo of Go on raw (emulated) hw in runtime/pchw, + performance fix on OS X +spec: clarify meaning of chan <- chan int, + func() func() int is allowed now, + define ... T (not yet implemented) +template: can use interface values +time: fix for +0000 time zone, + more robust tick.Stop. +xgb: support for authenticated connections (thanks Firmansyah Adiputra) +xml: add Escape (thanks Stephen Weinberg) ++
+This release is mainly bug fixes with a little new code. +There are no language changes. + build: $GOBIN should no longer be required in $PATH (thanks Devon H. O'Dell), new package target "make bench" to run benchmarks 8g: faster float -> uint64 conversion (thanks Evan Shaw)