Deno 于 2020.07.23 发布了 v1.2.1 版本。用户可以使用以下命令安装 Deno v1.2.1 版本：

Linux/macOS：

curl -fsSL https://x.deno.js.cn/install.sh | sh -s v1.2.1

Windows：

$v="1.2.1"; iwr https://x.deno.js.cn/install.ps1 -useb | iex

Deno CLI 的变更：

• fix: IPv6 hostname should be compressed (#6772)

• fix: Ignore polling errors caused by return() in watchFs (#6785)

• fix: Improve URL compatibility (#6807)

• fix: ModuleSpecifier removes relative path parts (#6762)

• fix: Share reqwest client between fetch calls (#6792)

• fix: add icon and metadata to deno.exe on Windows (#6693)

• fix: panic for runtime error in TS compiler (#6758)

• fix: providing empty source code for missing compiled files (#6760)

• refactor: Make OpDispatcher a trait (#6736, #6742)

• refactor: Remove duplicate code and allow filename overwrite for DomFile

  (#6817, #6830)

• upgrade: Rust 1.45.0 (#6791)

• upgrade: rusty_v8 0.7.0 (#6801)

• upgrade: tokio 0.2.22 (#6838)

Deno 标准库(Deno Standard Modules) v0.62.0 的变更：

• BREAKING(std/fs): remove readFileStr and writeFileStr (#6848, #6847)

• feat(std/encoding): add ascii85 module (#6711)

• feat(std/node): add string_decoder (#6638)

• fix(std/encoding/toml): could not parse strings with apostrophes/semicolons

  (#6781)

• fix(std/testing): assertThrows inheritance (#6623)

• fix(std/wasi): remove number overload from rights in path_open (#6768)

• refactor(std/datetime): improve weekOfYear (#6741)

• refactor(std/path): enrich the types in parse_format_test (#6803)