pppd_2.3.7 is released and here is just copy of letter of Paul Mackerras to linux-ppp mailing list about. There you can read, what's new in pppd, where to download etc. Debian users can download pppd_2.3.7 binary package from "unstable" (from http://www.debian.org or any mirror site).

Here with 2.2.4 kernel is working pppd-2.3.7 (Debian's release 2.3.7-2), both was compiled without problems and works well so far.