That's great for two reasons:
1) It's spectacular news for Symbian users
2) Those of us that love iSilo and have lots of content in iSilo format are certainly happy to see all signs of ongoing life and support for the format.
I use iSilo all the time in conjunction with iSiloX... basically everything that I find on the web, but don't have time to read, I just clip it with iSiloX and take it with me on my Treo to read later. Plus, iSilo and iSiloX is spectacularly easy and pleasant to use. As a result, the program is very important to me.
And with all the shifting and growth in the mobile device space, it's not so easy to rule out any platform for me in the future.