I'm a little reluctant to upgrade until I have answers on a couple of questions:
* Will it work to replace the new PR1.3 kernel with titan's kernel, or will he release a compatible version? I want to keep that kernel since the undervolting / overclocking really saves my battery and increase performance.
* Will swappolube still work? It really improved my n900 performance.
* What other apps. will brake? I want to hear some guinnea pigs complain first.

This time, I want to do a clean flash and get rid of any junk on my device.

* Does anyone know if I really need to backup the MyDocs folder when flashing ONLY the kernel ?
* Would it be necessary to flash the eMMC when upgrading to PR1.3?