IHG have launched a “Cyber Sale” which allows for up to 25% discount for bookings made until 17th December 2019. Don't forget this could be a helpful way to finish off any final objectives in your Accelerate promotion which expires in December also.
Note that this is 25% off the price of a flexible rate, but this sale requires and advanced, non-refundable purchase so it's not a like-for-like comparison. Also note that The Venetian Resort Las Vegas and IHG Army Hotels are specifically excluded from this promotion.
The promotion's landing page page, and its terms and conditions, is here.
You will need to book by 17th December 2019 and stay before 31st May 2020. Don't forget to use this link here.