Ruby 2.3.0-preview1 发布，此版本是 Ruby 2.3.0 的第一个预览版本，包括新特性和改进：
新增 Frozen String LiteralPragma
新增 Safe navigation operator，同时添加了 Array#dig 和 Hash#dig
绑定了 did_you_mean.gem
此版本相比 Ruby 2.2.0 修改了 1036 个文件，包括 81312 insertions(+), 51322 deletions(-) 。
下载
http://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.0-preview1.tar.bz2
SIZE: 14174035 bytes
SHA1: 55ad4f04d7a33ab780458ee0999de9f6124217ea
SHA256: 42b9c9e1740a5abe2855d11803524370bd95744c8dcb0068572ed5c969ac7f0f
SHA512: ae6d46c87f59e1fd3703b76dfc45bfcf208625f95ab9f4559f0b9f7050e8681f1a6e419f5fa06b704c83e56879c3a9ff1337dba443bcfca76fadb49c97d97a93
http://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.0-preview1.tar.gz
SIZE: 17560800 bytes
SHA1: 6249572e5dca27d8c73a0cbf036e24e5d88fe82f
SHA256: dc8f9d48392a2bb226df5f4b4fd2074d81af155cdf3f3799139a6e31e012aefe
SHA512: 58384ef6e743dde20ea263692dab86ce9d6d22d722ef4c02a84396aa3128ce06d933d9b69078a3cd666d72320a8a6ffdc93296bc0d5338595b2a44c29d4db383
http://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.0-preview1.tar.xz
SIZE: 11225228 bytes
SHA1: 85b4f631efa4b6435b2b41df6ce6c46da294c4d4
SHA256: a88e19d9dc001db8f49ca3986a8a4e69980affff876854585725e40de0eedcd8
SHA512: 3be0f3ed4de73509b2f6975fe3fbe28bb4d51df87db6e2c0019e8a107edf49be60b2127ba5b18bca91f9f5964b07f1adde3042dac6327017359eeb130760672b
http://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.0-preview1.zip
SIZE: 19777010 bytes
SHA1: 3458666c250dd333ac4b537be25f1913dd311ea1
SHA256: 0fc1d4450e9141f541038a4433f8fb49fb929e43c7bf5985685a4fa7b213a811
SHA512: f53653cf11d8dce1d627f7db3a15acca29c74c78735406a5d64bbbdc39fac232ef63110eb4d83521bef40c6f3006d55bbeaf54d1ddab1d4b6e5a13cee9247e85
软件详情：https://github.com/ruby/ruby/blob/v2_3_0_preview1/NEWS
来自:开源中国社区
