I quite agree renwl's viewpoint the topic which has relation with telecomunication chips will be hot,by the way UniqueICs seems to be a quite beautiful russian beauty.
I think some new area such as biomedicine chip will be hot. Communication such as transceiver, CT sigma delta ADC and so on. The high accurancy and high speed AD/DA will always be extended. Low voltage and low power circuits' research and PM are hotspot too.