W-4 Withholding Calculator

The software directs me to here for W-4

https://turbotax.intuit.com/tax-tools/calculators/w4/

which has the message "We are currently updating our W-4 calculator to incorporate changes to this form from the IRS and recent legislation. Please check back soon."

I've been waiting for days and days. Does anyone have an estimate of what "soon" means?

Thanks!