Note that both the bonus and spending requirement are new.
Previous: 50,000 miles after spending $2,000 in 3 months
Current: 60,000 miles after spending $3,000 in 3 months
The change is well worth it, as you can now get a Southwest Companion Pass with just $5,000 of spend if you also apply for either of the personal cards that has a 50,000 mile bonus.
HT: Doctor of Credit