Following up to your feedback we are providing a refresh for the Beta version of the .NET Micro Framework 4.0. 

Download procedures are as for the Beta and if you already accepted the Microsoft Connect invitations for the Beta PK and SDK, you should not have any access problem, and you should find the newest binaries in the download area on Connect.  

The most important changes are the addition of a new reference port for the Atmel SAM9RL64-EK development board for the SAM9RL64 processor (ARM926-J core) and some fixes for the HTTP(S) support.  We also improved the LPC2478 reference port, improved the PK documentation with board specific instructions and provided some more detailed information about the booting strategy with TinyBooter on different reference ports.
We are looking forward to hear from you, please submit your feedback through Microsoft Connect.