In addition to the new 10% tornado probability, I see that they have added a 60% probability area for the Day 2 outlook. A HIGH risk can be issued on Day 2 should there be a 60% hatched area, the way I read it. In addition, MDT risks may be issued on Day 3 outlooks if there is a 45% hatched risk area. Hopefully as the models get better, the confidence in a forecast of an event 2-3 days out can be great enough to go for a HIGH (MDT) on a Day 2 (Day 3) outlook.
Also, the PWOs will be issued for moderate risk Day 1 Outlooks only when there is at least a 15% tornado or a 45% wind probabilitiy forecast.
I do like the change to only issue PSWOs for the higher-end MDT risk events. It seemed like there 20 PSWOs issued in 2005 (I doubt there were that many, but my point is that they seemed much more commonplace than in years past) with the change of policy to issue PWSOs for all MDT risk events. The upcoming change seems like a good compromise between highlighting days with an enhanced threat of severe weather (not just for those 0-3 days per year with HIGH risks), and keeping the products "high-end" enough to evoke the desired, "you REALLY should pay attn to the skies today" response.
EDIT: Apparently, I wasn't looking closely enough to notice that they got rid of the 25% and 35% in favor of a 30% risk. In addition, I see that there can be a SLT risk with 45% unhatched hail. IIRC, previously, 25% hail was the max for a SLT risk, with 35% risk hail requiring a MDT risk, so that's quite a change!
Assuming the probability forecasts for similar events stay the same this year (i.e. an event like 6-9-05 will see similar probs this spring as was forecast last spring), I don't expect to see as many MDTs, that's for sure!