well, I just got 1+3! waited around 3 weeks and it arrived in Europe!

anyway, filled a RMA ticket in their system to trade into new one, as launch is scheduled tomorrow. It's a shame I did not see any news/rumors about the new flagship coming out.. My HTC one M7 is really bad with battery, decided not to wait till xmas. So...

I must admit, I was tempted to get the Xiaomi Mi Mix, but it's limited and did not find any store to get it from. Hope HTC < 1+
I am in pretty much the same boat you are. My 1+3 is shipping out tomorrow (receiving on November 21), but whatever comes on November 15 should not cause a great disappointment to 1+3 owners.
You should look at it this way –
1. ”Hot” china phones (which this new 1+3T probably also is going to be) are always very hard to get and even if you would have waited for November 15 you would have to wait at least a month, but more likely couple of months, to get yours with a condition that’s its available for immediate pre-order right on November 15;
2. 1+3 although it has its pros and cons overall is an awesome phone, which has received generally just positive reviews and even received some awards as the device of the year, so you should be excited that you own a great device with awesome price/performance ratio;
3. 1+3 at its price of 399 EUR is still a device which can call itself a true flagship killer. The new one, which supposedly will cost ~80 EUR more, is already approaching premium segment, which kills the fun a little bit;
4. There’s no perfect phone as each one of them has its pros and cons, and this new 1+3T definitely won’t be the first ideal phone, so the superiority of 1+3 is the fact that it has been in the market for a while and all of its cons are known and and you can assess whether any of those cons are critical to you or they are just minor issues that you can cope with.
5. Its not like tomorrow's release of 1+3T will diminish value of your 1+3 to the ground. At least until the release of 1+4 there's will be a customer both for 1+3 and 1+3T.