package org.testng.internal;

public class Version {

  public static final String VERSION = "DEV-SNAPSHOT";

  public static String getVersionString() {
    return VERSION;
  }

  public static void displayBanner() {
    System.out.println(
        "...\n... TestNG " + getVersionString() + " by Cédric Beust (cedric@beust.com)\n...\n");
  }
}

package org.testng.internal;

public class Version {

  public static final String VERSION = "7.0.0";

  public static String getVersionString() {
    return VERSION;
  }

  public static void displayBanner() {
    System.out.println(
        "...\n... TestNG " + getVersionString() + " by Cédric Beust (cedric@beust.com)\n...\n");
  }
}

Update Version.java to 7.0.0.