As Harlequin said, about fucking time!!! (paraphrasing)
It is silly that it took the occulus rift hype for the herd animals called investors to get interested again, but I am glad they did. I quite agree with the new Scandinavian CEO. I think that it was high time that development on a second life the second began. I am pretty sure that it can indeed make leaps if it gets rid of the shackles of it's legacy coding.
And I am sorry, but I am completely insensitive to all the worries about lost inventory and property in SL 1. What did people expect when they bought that 6000 linden sexbed? That they would still get mileage out of it in 2029? So, you still have that collection of layer outfits from 2007 which you paid quite a bit for. Are you still wearing them? So, you have 100 bows in your inventory? Are you shooting them, or are you only using the bow you bought 6 months ago? When you buy things in a virtual world, those things are going to become obsolete soon. Because the rules get changed, because something better comes along, because the virtual world is replaced by another one to which everyone moves. It happens to most things in RL. Your car, your laptop, your TV. And virtual 'possessions' are more like fast moving consumer goods than any of those. Most of them will spoil within a few years. Enjoy them for a while, then forget them. If you didn't get that at the time, you were being very naive.
To me the guy I heard in that meeting, complaining about the 10.000 dollars he put into his SL inventory, which would stop him from moving over to a new second life is a complete and utter moron.
Of course, it would be nice if they gave long time SL users some perks when they come out with a new version of SL. Keeping names and friend lists and such would be cool. Being able to transfer notecards, textures and such should be doable for them as well, if the user has mod rights. As someone said, perhaps they will want to do that for things that people do not have mod rights for as well (as someone noted a while ago, one of the latest ToS changes seems aimed to give LL the right to do that, one of the things that people were crying out about, but which, for the average user, would be a pretty good thing). If they break free from the legacy constraints, things like prims (and I am guessing mesh) will not be carried over. But hey... the content creators still have their assets. They will simply update their content and offer it for sale again. So... just consider it an upgrade that you have to pay for. Things in SL are not really THAT expensive for most people living in the Western World.
Another concern would be land/sim-owners. I am sure they will come up with some sort of a deal for those that own (rather than rent) land in SL today. They want to keep those people happy (and paying), so I bet there will be a deal like: exchanging the SL 1 sim for a SL 2 sim, mostly free of charge.
For those that consider their property of SL land as an 'investment' (which I never thought was especially smart), something like that would probably be a pretty good thing. If SL 1 was just left to decline and die, slowly, the value of that land would drop to zero, anyway, sooner or later. With the possibility of a 'second life' for Second Life, that value might remain stable.
As for the complaints about the new SL not being 'open source'... I think that those thoughts are naive. LL is a company. SL wasn't open-source from the start. LL can only make it open source if they know that their grid (and money sources) are going to dominate the thing they are developing. They can't invest heavily in code and offer it to others to copy and try to make their own competing grid, as was sometimes tried (unsuccessfully I think) by alternative grids. I am guessing that they will find a way to enable those that were nice enough to make cool viewers for our use to contribute some other way.
So, for me, this news is one big positive.