Well, lets assume for a moment that Engadget is right, the "Tube" is about to come out for real (I wont make the same assumption about the other site: they were debunked back in September). Here's my thoughts:

1) I hope it's a Maemo device, and not a Symbian device. That will be a very good sign of things to come wrt to the future of Maemo, and Nokia's plans for it. At worst, Maemo Linux with a Symbian GUI (it'd be weird to have a non-X based GUI on a Linux device, but weird does not equate to bad; after all, look at OS X -- non-X based GUI on a unix platform).

2) I hope that it is either: very well integrated with the N810 OR that it has a physical keyboard. While it'd be cool to see the Tube as a WWAN enabled successor to the N800, I still want a device with a physical keyboard. Ideally: it can share its data feed via Wifi, not in ad-hoc mode but in an actual access point/infrastructure network way. That would make it both a nice fancy iPhone competitor, AND a cradlepoint competitor. If not that, then at least have Bluetooth DUN that is 100% compatible with Maemo devices.

3) If it's a phone, and not just another flavor of NIT, as Engadget seems to be saying, then I hope it has PIM software. Full-IMAP-Email, Calendar, To-Do/Tasks, Contacts, and Bookmarks that all that sync with Mac and Windows stuff. It'd be nice if it synced with Google too. Not just generic Gmail, but "Google Apps for (Your Domain/Education/Enterprise)". Even better if it has Android-isms on it.

4) If it does run Maemo, I hope to see its software make it back to being available on the N800 and N810. Including the PIM and sync parts.

5) I'm hoping for a world-phone. This isn't something I _expect_, nor is this based on any sort of reality coming from things I've seen nor read from Nokia, I'm just saying "this is what I'm hoping for in a phone, lately". Seeing the recent Awang Tilt knock-off, where they've crammed a dual-SIM GSM phone, FM tuner, TV tuner, 2 camera (one for chat, one for pictures) device into an AT&T Tilt/HTC TyTN-II form factor ... for under $200 ... kinda gave me some hope and desire about what it is I really want in a phone. dual-SIM GSM that can do European, AT&T, and T-Mobile-USA GSM and 3G would be lovely. What would be ideal, of course, would be being able to do 1 CDMA service, and 1 or 2 GSM services ... but I only say that because my current phone carrier is MetroPCS, and I'd like to keep them for my voice/sms/mms carrier (I doubt Nokia would put out a new CDMA phone right now; that's all Nokia Siemens these days, isn't it?). Being able to do that, but put my data on AT&T or T-Mobile would be ideal. Being able to do THAT, and still have 1 more SIM slot available for world travel? double-plus good. Being able to do it on a Maemo device? I'd be on cloud nine.

Though, taking a step back toward reality: if it's a Maemo based phone, I'll probably buy it even if it just has 1 SIM slot and no other GSM/CDMA capabilities. In that regard, just make sure it works with T-Mobile-USA.

And taking a bigger step back toward reality: I think it's more likely that Engaget is wrong, the device we saw in a concept video last summer is not about to be released to the market. Maybe what they saw at the preview was a touch-screen device, but I bet it's not the same device that was in the concept movie last summer. But maybe/hopefully it was the N900 that was shown at the conference.