OS/2 2.0 developers should contact the IBM Developer Assistance Program (phone 407-982-6408); membership is free. (You may also join on CompuServe with GO OS2DAP.)
The OS/2 Professional Developer's Kit CD-ROM, containing a wide selection of development tools and code, and the OS/2 2.1 Beta CD-ROM are both available from IBM (phone 800-3-IBM-OS2 to order in the United States for between $15 and $20 each, shipping included; in Canada, phone 800-465-1234; in Australia, phone Rohaini Cain or Mike Voris at 13-2426 ext. 7684; elsewhere, contact the International OS/2 User Group by phoning 285-641175 in the U.K.)
The OS/2 Device Driver Development Kit CD-ROM is also now available from IBM. To order phone 407-982-4239 (FAX 407-982-4218) in North America, 61-2-354-7684 (FAX 61-2-354-7766) in most of the Far East and Pacific Rim, 81-3-5563-5897 (FAX 81-3-5563-4957) in Japan, 81-2-528-1548 (FAX 82-2-528-1414) in Korea, 011-52-627-1846 (FAX 011-52-395-7812) in Latin America, or +49-69-6645-3318 in Germany.
(taken from the OS/2 general FAQ)