I believe I overheard Larry Wall mention something (not in person ;-) about the Perl on Palm problem playing a role in deciding to start work on Perl 6.

He also alluded to the fact that the reason why Pippy (Python on Palm) was possible is the fact that much of the Python language is itself written in Python, internally. This makes it more feasible to write the core portions of the language and keep it small enough to fit into the memory limitation, from what I could tell. So I guess part of the Perl 6 design is lifting some more of this concept and will fit more easily into devices that require small footprints.

If anyone out there remembers where this interview with Larry Wall was, I'd appreciate the link, as it's late and I can't remember right now. ;-) Also, I'd like to take a moment to point out the fact that my above description may be completely erroneous due to a combination of ignorance and sleep deprivation. Please proceed accordingly.