Felbutss is correct, though the acronym 'RDA' actually stands for Remote Device Access in this instance
As the name would suggest, a direct connection is made to the device. This is achieved via USB on the far end and obviously routed via the internet to your PC
The firmware is 100% real but not 100% finalised - What we have seen here today may never reach our handsets, but there is little chance of that happening
This has merely been an insight into the certain upcoming of the next firmware leap for us
N95-1 users, and nothing else - Nokia specifically states that the firmware is not of a final release so it may be worked on for some time yet
All we can do is sit and wait, with a little more knowledge of what to expect when Nokia finally hits us with their new firmware ;)