Just discovered this was out yesterday -awesome!
Spoiler:
Tbg cnfg yriry 19 naq nz fghpx va gung svany punzore jvgu TynQBF. Nsgre qebccvat gur onyy qbja gur qvfcbfny puhgr V unir gevrq rirelguvat gb qrfgebl vg, ohg ab wbl. Zl nffhzcgvba jnf gung V trg gur ebpxrg ynhapure gb gnetrg zr, qbqtr naq yrg gur ebpxrg tb guebhtu n cbegny gb xvyy vg - ohg gung xrrcf ba abg jbexvat.

Am I on the right lines? All hints accepted...

oh, and did someone say HL2 Episode 2 is out? I must have been out of touch too long. Gah!

Edit: De-spoiled
--_l0ser