http://blogs.msdn.com/b/netmfteam/archive/2012/12/04/netmf-4-3-released.aspx
Note: this doesn’t mean GHI or other vendors are ready do deploy a new version of their bits; the RTM announcement above now allows them to take that build and start work, although there’s still lots of work in 4.2 going on that will obviously still take time before transition to 4.3 can start.
No break yeah? 4.2 to 4.3 in one week 
By the way, guys updates in future will be MUCH smoother in future. 4.1 to 4.2 took longe due to the huge load of new additions, numerous bugs we had to squish in these new devices and the endless gadgeteer module. We are on it but not till February. We are using next 2 months to update documentation and cover any bugs.
You can put off the documentation for one week… 