Tune in to our Microsoft event liveblog tomorrow at 10AM ET!

First Apple, then Google, now Microsoft. Over the past month, we've seen some of the biggest tech companies either hold keynotes or just straight-up announce a ton of stuff. Now, rounding out the list, Microsoft is about to put on a big press event of its own, where it's promising several new devices running Windows 10. We'd say a refreshed Surface Pro is a safe bet, given that it hasn't received an update in a year and a half. This would also be a good time for Microsoft to officially launch Windows 10 Mobile and indeed, we've seen leaks for a number of handsets, including the 5.2-inch Lumia 950, the 5.7-inch 950 XL and the lower-end Lumia 550. We also want to know when we can buy HoloLens, but we're less confident that Satya Nadella & co. will address that this week. In any case, all will be revealed tomorrow — bookmark our liveblog link and check back at 10AM Eastern for full coverage.