The most recent Ultra Street Fighter 4 update discussed the new Ultra Combo Double and Red Focus Attack systems. Alongside the reveal of the new systems, Capcom detailed four of the five new characters set to release as part of the new update.
Elena kicks off the Ultra Street Fighter 4 character discussion with a departure from traditional long ranged kicks. Although she excels as a mid-ranged character, her high/low game makes her a strong opponent when up close. Hugo though, loves to invade your personal space with strength in putting opponents in corners. His powerful throws put him among other elite grapplers.
To read more about the two other characters, Poison and Rolento, the Cacpom Unity blog provides more details.
Ultra Street Fighter 4 is scheduled to launch next year soon after the Japanese April launch. As Combofiend pointed out, Ultra Street Fighter 4 launches after April, but before the EVO fighting event.