If you're both ready and set, then you'll be pleased to know that Microsoft has major Windows Mobile goings-on to discuss tomorrow at 9AM ET (3PM here in Spain). What does that really mean? Well based on the torrent of circumstantial (and actual) evidence we've seen, it looks like the big M is set to deliver its most important piece of mobile news in years: Windows Mobile 7. Or, Windows Phone 7 Series or whatever it is they're calling it these days. Regardless, it looks like a new era for Redmond's smartphone platform, and we'll be there covering the whole thing minute-by-minute as only Engadge