I'm wondering nobody asked, and this model isn't mentioned anywhere yet, still the previous 4040 seems officially supported. Any chance to have OpenWrt for it somewhen in the future? Doesn't have to be now, I'm just for evaluating since a new router is needed and I'll probably keep it for a long time.
Ps. If not, is there a recommendable router with support and similar or better specs?
Based on your link, it seems to be an ipq807x based device, for which support is still pending (but on a good way). However many modern ARM SOCs do have support for secure boot, which may throw a spanner into the works - in some cases this can be circumvented (by changing a u-bootenv variable via serial console), in some cases it may prevent any 3rd party firmware at all - in some cases the vendor left it disabled; there's no way to know this before trying (open device on the desk, serial console attached, trying to boot an initramfs image).
Chances for DECT support would be close to zero either way.
There are a few already supported (as in present in the pending development forks) ipq807x devices with similar features (no DECT) in that general price bracket (~200-220 EUR).
Thanks for the details so far. DECT support is not important, but rather the wifi and hardware specs look promising, especially if open source hardware can be run on it. Couldn't find other devices with similar specs like the 2.5Gb WAN port and tri-band wifi ax & appearently "decent" CPU / memory while being affordable here in Europe and having a potentially supported SOC. In comparison for example there are similar Asus devices that seem also good and have extended functionality on the OS, but run on broadcom (and at some point I'd like OpenWRT on it). The FritzOS capabilities on the other side seem rather limiting.
Would it help getting one and posting serial logs of it, or has there been any progress meanwhile?