The projects, codenamed Montreal and Seoul, aim to address some of concerns expressed at last year's show when IBM revealed plans to standardise Lotus technologies on Java 2 Enterprise Edition.
Many Domino developers feared that the Notes client and Domino development environment would give way to WebSphere.
Montreal and Seoul - part of Lotus' next-generation collaboration strategy - will give Lotus Domino developers tools to flourish in a J2EE world. A Lotus spokesman said the aim was to help protect the Domino developer skill set and applications as they move into a Java environment.
Project Montreal will adapt some Domino Designer functionality to IBM's WebSphere Studio Java-based developer toolkit. Project Seoul, meanwhile, aims to provide collaborative capabilities in a component fashion for use in a variety of J2EE-based applications and business products.
The Montreal and Seoul technologies will hit the market later this year.
Other themes planned for Lotusphere include the building of blended applications on Domino and J2EE application development environments and overall messages about the use of common componentry across Lotus and IBM software groups, said Ken Bisconti, vice-president of messaging solutions at IBM Lotus Software.
Lotus also is working to bring some of the rapid application development qualities of Domino Designer to the J2EE world.
Bisconti added that Domino developers would be reassured that "they have investment protection in all the applications and skill sets they have invested in".