Google announced on its official blog that they'll soon be adding a new program to their Google Docs and Spreadsheets family that will enable users to make presentations:
First of all, we want to welcome the team from Tonic Systems to Google. Tonic, which we've just acquired, is based in San Francisco and Melbourne, Australia. They have some great technology for presentation creation and document conversion, and it will be a great addition as we add presentation sharing and collaboration capabilities to Google Docs & Spreadsheets.
We've already freed those of you working in teams from the burdens of version control and email attachment overload when going back and forth on word processing and spreadsheets. It just made sense to add presentations to the mix; after all, when you create slides, you're almost always going to share them. Now students, writers, teachers, organizers, and, well, just about everyone who uses a computer can look forward to having real-time, web-based collaboration across even more common business document formats.
According to the Google guys and girls the presentations software should be ready this summer.