I just noticed this today. Finally there is mention of Hawthorn. While it is not included as of yet, I expect that it will be as it becomes integrated into the chain.
One thing I love is the clarification that Days Inn guarantees are worldwide.
"Guarantee applies only to reservations made at the wyndhamrewards.com web site or the Wyndham Rewards toll-free number for participating Wyndham Rewards hotels in the United States and Canada. The Guarantee only applies for Wyndham Hotels and Resorts in the United States, Canada, Caribbean and Mexico. The Guarantee applies worldwide for Days Inn. The guarantee does not apply to Hawthorn Suites hotels. "
Read the updated terms and conditions here.