Anyone heard the new ARC LS28 SE?

No I have not however, I have heard previous Linestages and Ref series preamps. The Ref series are steps above the Linestages.  Different build qualities. 

My opinion the 28SE is several notches below a Ref 6. ARC makes Ref series preamps for a reason. This is my opinion only but why would a company make a linestage that would better their top of the line models especially within a model years apart? 

You are correct Kren0006 comparing old vs new is a different story  :)

I think the Linestages do have the same sonic characteristics as their bigger brothers but as far as performance the Ref series is going to have more of EVERYTHING generally speaking.  Personally I love the new look of the current crop of Revolution preamps.