Thanks! Here's a quick summary from there, with links to the implemented proposals.
Multiple values: Generalized the result type of blocks and functions to allow for multiple values; in addition, introduced the ability to have block parameters
Vector instructions: Added vector type and instructions that manipulate multiple numeric values in parallel (also known as SIMD, single instruction multiple data)
Multiple values: Generalized the result type of blocks and functions to allow for multiple values; in addition, introduced the ability to have block parameters
https://github.com/WebAssembly/spec/blob/main/proposals/mult...
Reference types: Added and as new value types and respective instructions
Table instructions: Added instructions to directly access and modify tables
Multiple tables: Added the ability to use multiple tables per module
Bulk memory and table instructions: Added instructions that modify ranges of memory or table entries
https://github.com/WebAssembly/spec/blob/main/proposals/refe...
https://github.com/WebAssembly/spec/blob/main/proposals/bulk...
Vector instructions: Added vector type and instructions that manipulate multiple numeric values in parallel (also known as SIMD, single instruction multiple data)
https://github.com/WebAssembly/spec/tree/main/proposals/simd...
Sign extension instructions: Added new numeric instructions for performing sign extension within integer representations.
https://github.com/WebAssembly/spec/blob/main/proposals/sign...
Non-trapping float-to-int conversions: Added new conversion instructions that avoid trapping when converting a floating-point number to an integer
https://github.com/WebAssembly/spec/blob/main/proposals/nont...