PyPy 2.1 Beta1 才刚刚在2天前发布，今天 PyPy 宣布 2.1 正式版发布。
值得关注的改进内容有：
- JIT support for ARM, architecture versions 6 and 7, hard- and soft-float ABI
- Stacklet support for ARM
- Support for os.statvfs and os.fstatvfs on unix systems
- Improved logging performance
- Faster sets for objects
- Interpreter improvements
- During packaging, compile the CFFI based TK extension
- Pickling of numpy arrays and dtypes
- Subarrays for numpy
- Bugfixes to numpy
- Bugfixes to cffi and ctypes
- Bugfixes to the x86 stacklet support
- Fixed issue 1533: fix an RPython-level OverflowError for space.float_w(w_big_long_number).
- Fixed issue 1552: GreenletExit should inherit from BaseException.
- Fixed issue 1537: numpypy __array_interface__
- Fixed issue 1238: Writing to an SSL socket in PyPy sometimes failed with a "bad write retry" message.
官方发行说明：http://morepypy.blogspot.com/2013/08/pypy-21-considered-armful.html