My friend Steve works as an engineer at DL and I was asking him some questions as to updates to DL. This was his response. I thought it was interesting.
[I]Hello, Disneyland Resort is under some changes. Most of the work is over
at DCA, with only small projects at Disneyland. I will do the best to
explain what we are doing.
World of Color - Spring 2010 - It will be like Illuminations at Epcot,
but much different. Currently the Lagoon is drained for construction
The Little Mermaid - Spring 2011 - Advanced Dark ride, similar to the
Haunted Mansion, but with new advanced anaimatronics, lighting, and
Carsland - Summer 2012 - All new land based on the Pixar movie Cars. There
will be all new state of the art E Ticket attraction, Radiator Springs,
similar to Test Track, but bigger faster and more show elements.
Main Entrance to DCA - Summer 2011 - New entrance with similar main street
to Disneyland. New Trolley and shops…
Small changes around the park, but not many big changes until after 2012.
I think if you did visit the Disneyland Resort in 2010 it will be great,
but there will be construction at park of DCA.
I hope this helps. let me know of any other questions.