More proof that the PGP folks have some kind of alterior motive. Translation: They created a software package which purposefully breaks the previous free versions of that package. Then they release a development kit for that package with outrageous licensing fees. Welcome to the new PGP Inc.

First, PGPsdk has been released:

http://www.pgp.com/sdk/

The bad news: the licensing fees are so high that there will be no freeware or shareware applications using it. Here's an example of the licensing:

License Plan #1

Authentication, Encryption/Decryption, PGP/MIME, Key Management: $25,000 advance on royalties + 2% of product revenues (minimum $1 per client and $35 per server)

Add Certificate Server Integration: $5,000 advance on royalties

Support/Upgrades (includes email support by a trained developer support technician) $1,500 per year + 15% of royalty payments