Talkspace announced an intriguing new partnership with Amazon Health Services today.Shares of online mental healthcare provider Talkspace (TALK 14.62%) have soared 16% as of 3:30 p.m. ET Tuesday, according to data provided by S&P Global Market Intelligence.The company announced a partnership with Amazon's health services unit, in a move it says aims to improve the discoverability of its services among the 145 million people who are covered by its benefits.Management believes partnering with the world's seco ...