Melissa,
I couldn't respond earlier as I was trying to leave for work and also at work today. I was mortified to see the rude comment above.
Yes, I do believe the 3770 is being replaced. LG has just started placing their upcoming models on their web site--and thus far the 2 upcoming new ones don't have TurboWash, but I expect subsequent new models will.
If you're ever curious as to what the wash water temperature is on a load, there is a combination of buttons that will show the temperature in Celsius. I don't have the combination, but I would imagine some of the other LG owners can provide that information. Another button combination will yield spin RPM speed.
Personally, I'm very thankful you have a large family. Appears your family has been bountifully blessed on all sorts of levels. I will put you and your family on my prayer list for God to continue to bestow His blessings upon you and your family.
And remember, if you have questions, you know you can always ask and we will provide the information you seek.