MSI follows the trend to make all solid capacitors (Conductive Polymer Aluminium Solid Capacitors) boards introduced by Gigabyte about eight months ago. This is good for the customer because it increase the lifespan and stability of any motherboard even in harsh conditions, such as hot summer day. The bad thing is, it increases manufacture cost, by about $5-$7. Due the increased usage, there is a possibility that the price premium compared to conventional motherboards will decrease in the near future.
You can read their preview over here.