The icon of Christ is hanging on the cross in the altar. On Holy Friday when we were participating in the service where Christ is removed from the cross as part of the Gospel reading, the priest carried the icon of Christ into the altar (tomb) wrapped in a white sheet. Later the cross was returned to its regular place behind the altar table and was left bare, that is until Ascension (yesterday.)
Following the consecration of the Gifts, we will return (I think) to singing the hymn, "Truly is it Meet." to the Theotokos. During the Paschal Season we sang "The Angel Cried Out..." (that your Son is risen from the tomb.)
A few more things you might notice: the priest's vestments will no longer be white (or red) and the Resurrection banner should be put away. Just more signs that the Paschal season is over and it's time to move on to the next Feast... Ascension and then Pentecost*.
Kontakion for Ascension,
in the Plagal of the Second Tone
O Christ our God, upon fulfilling Your dispensation for our sake, You ascended in Glory, uniting the earthly with the heavenly. You were never separate but remained inseparable, and cried out to those who love You, "I am with you and no one is against you."
* Although we stopped kneeling during the consecration of the Gifts, we will continue to stand until the Kneeling Prayers with Pentecost, June 8th.