Yes, sure. As I understand it IP65 will support all the (soon) existing Atari solutions, so it can become handy to handle interfacing to the dragons.
Unfortunately it's not that simple. My statement "The question of implementing "PCLINK over Ethernet" is of course equally relevant to both upcoming Ethernet solutions." was a generic statement about a hypothetical software. IP65 isn't that software for (at least) two reasons:
1. The PCLINKoE software wants to be small by making use of the TCP/IP stack inside the W5100 chip. In contrast IP65 allows to use both the CS8900A chip of the existing Dragon Cart as well as the W5100 chip. The CS8900A doesn't have a TCP/IP stack so IP65 comes with its own TCP/IP stack (running in the ATARI RAM on the 6502). Even when actually working with a W5100 (in constrast to a CS8900A) IP65 doesn't make use of the TCP/IP stack inside the W5100 at all. Rather it uses the W5100 just as an Ethernet controller (like the CS8900A).
2. I don't see the IP65 that I provide support the Atari solution discussed in "the other" thread. You can read about the details in that thread. However to summarize: I asked about the technical details of "the other" solution necessary to support it several times and got no answer. I offered to commit to support "the other" solution with IP65 and Contiki if "they" commit to support the Dracarys with their software and got no answer. When adapting my W5100 driver code to the ATARI I had to make a choice to either have larger/slower code that could potentially support both W5100-based solutions or smaller/faster code only supporting the Dracarys. Guess which route I chose given my communication experience. By now my driver implementation is finalized so I'm by now not interested anymore in whatever whoever has to say about "the other" solution.