The Ultimate Pocket PC Dept: Rumor has it that HP is brewing a very special Christmas present: the new Jornada 550. If the rumors are true, it will have a Casio-like 16-bit screen and an iPaq-like 206MHz XScale processor, all in the same slim Jornada form factor we know and love. Pocket PC owners: if this device actually materializes, would it be compelling enough for you to switch? Vote here.