Feature getting acquired
As I pointed out here of how Features are acquired…..
The big 4 in EDA are trying to be the first to the DFM market by buying out the smaller specialist companies in the DFM field.
Now it is Mentors Graphics turn
Mentor buys 45nm chip design tool firm
Mentor Graphics has acquired Sierra Design Automation a supplier of place and route semiconductor fabrication tools for 65nm and 45nm process nodes.
The reason behind the acquisition is the need to address the range of process technologies and new design for manufacture (DFM) methodologies which are expected to influence next generation chip designs.
Earlier it was Cadence
Its fun watching a industry evolve and be in it rather than read about something that happened before you were born 
