Most of the parts are just updated such as ASC to ASC2, it also has faster communication link.
The L81294 - LEGACY LCS SENSORTRACK and the L81325 - LCS WIFI MODULE are both new and have the faster com link.
Also, the L81326 LCS SERIAL CONVERTER is new and is use to convert the new com link to the old com link speed for compatibility so nothing will be obsolete.
Hope this helps.
Dan