Yes, you still need the 737 type to get hired at SWA and you can still interview without it. But, the SWA recruiter/interviewer (Lindsey Lange) said they are focused on pilots with the 737 Type because they need pilots now. So, reading between the lines... They are not going to waste valuable time interviewing non-typed pilots until they have to. They want to put you in a class as soon as possible. She also said as of this month their pool will be dry.