Lotus Development Corp has released the Professional Developers’ Version of its upcoming Release 4.0 of Lotus Notes, due out in mid-1995. The company is sending the developers’ version to about 200 software writers and will be meeting them at the end of January, at a meeting scheduled during Lotusphere ’95 to be held in Orlando, Florida. By then, presumably, Lotus hopes its developers will have incorporated some of the new Notes features, which include integrated client-server mail and enterprise server support into their existing products. Lotus will not give a definite ship date for Notes Release 4.0 and says delivery dates are speculative and subject to change without notice.