Looking over the 10.2 documentation it talks about the new landscape handle feature for supporting over 1 million models. However, it indicates that this is an option for new DSS and new installations only. Are there any plans to provide a mechanism for existing customers to convert over to the huge landscape handles? We are already have some landscapes with over 600,000 models and I expect that number to greatly increase this year.
Unfortunately there are no plans to provide a mechanism to do that. It would most likely be a very large undertaking (code wise). The only option for "migrating" a previously existing db to a "huge landscape handle" db is to use modeling gateway export/import.