Are there any new findings on chronic lymphocytic leukemia regarding preventive treatment /protocol to slow progression of disorder while asymptomtic?

Not really: At this time the general approach is to not treat patients with asymptomatic cll unless it is part of a clinical trial.

Yes (but...): Yes, but minimal and does not change the standard of care. Dr. Shanafelt and colleagues at mayo clinic have looked at green tea extract in rai 0-ii cll showing a 67% response rate. http://www.asco.org/ascov2/meetings/abstracts?&vmview=abst_detail_view&confid=74&abstractid=47574 -- conclusion: egcg containing green tea extracts may have potential as disease stabilizing agents...