Supposedly NavNGO is working on improving much of the features we have seen in iGO8 like the Driver Alerts. While some users are worried that NavNGO will leave behind the PNA market, I find that hard to believe.
The primary reason for that is because the PNA version is easily adapted to other platforms like PDAs, 2Dins and smartphones. And knowing some characters on other boards, I am sure they will find a way to make it compatible with their old devices. Hopefully it will be more user-friendly towards finger-friendly smartphones and possess TTS. Some companies mistakenly think of smartphones as being PDAs and iGO8 did not have TTS available for its PDA version.
Most users like me have more than one platform or device. I presently have a PDA and smartphone. Plus I provide "expert advice" to my Brother and a friend who have a different smartphone and PNA respectively. For this reason I believe others will find a way to port it to other devices.
Still, NavNGO has promised to release maps for those platforms up till 2010. Personally I don't travel in too many newly built up areas. So, my future 2010 maps will mostly likely serve me for at least two to three years beyond.
iGO9 probably will not be out much before February 2010 but I could be wrong (I hope; I hope)!